1/*-
2 * Copyright (c) 2016, Hiroki Mori
3 * Copyright (c) 2009 Oleksandr Tymoshenko
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD$");
30
31#include "opt_ddb.h"
32#include "opt_ar531x.h"
33
34#include <sys/param.h>
35#include <sys/conf.h>
36#include <sys/kernel.h>
37#include <sys/systm.h>
38#include <sys/bus.h>
39#include <sys/cons.h>
40#include <sys/kdb.h>
41#include <sys/reboot.h>
42#include <sys/boot.h>
43
44#include <vm/vm.h>
45#include <vm/vm_param.h>
46#include <vm/vm_page.h>
47#include <vm/vm_phys.h>
48#include <vm/vm_dumpset.h>
49
50#include <net/ethernet.h>
51
52#include <machine/clock.h>
53#include <machine/cpu.h>
54#include <machine/cpuregs.h>
55#include <machine/hwfunc.h>
56#include <machine/md_var.h>
57#include <machine/trap.h>
58
59#include <mips/atheros/ar531x/ar5315reg.h>
60
61#include <mips/atheros/ar531x/ar5315_setup.h>
62#include <mips/atheros/ar531x/ar5315_cpudef.h>
63
64extern char edata[], end[];
65
66uint32_t ar711_base_mac[ETHER_ADDR_LEN];
67/* 4KB static data aread to keep a copy of the bootload env until
68   the dynamic kenv is setup */
69char boot1_env[4096];
70
71void
72platform_cpu_init()
73{
74	/* Nothing special */
75}
76
77void
78platform_reset(void)
79{
80	ar531x_device_reset();
81	/* Wait for reset */
82	while(1)
83		;
84}
85
86/*
87 * Obtain the MAC address via the Redboot environment.
88 */
89static void
90ar5315_redboot_get_macaddr(void)
91{
92	char *var;
93	int count = 0;
94
95	/*
96	 * "ethaddr" is passed via envp on RedBoot platforms
97	 * "kmac" is passed via argv on RouterBOOT platforms
98	 */
99	if ((var = kern_getenv("ethaddr")) != NULL ||
100	    (var = kern_getenv("kmac")) != NULL) {
101		count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
102		    &ar711_base_mac[0], &ar711_base_mac[1],
103		    &ar711_base_mac[2], &ar711_base_mac[3],
104		    &ar711_base_mac[4], &ar711_base_mac[5]);
105		if (count < 6)
106			memset(ar711_base_mac, 0,
107			    sizeof(ar711_base_mac));
108		freeenv(var);
109	}
110}
111
112#if defined(SOC_VENDOR) || defined(SOC_MODEL) || defined(SOC_REV)
113static SYSCTL_NODE(_hw, OID_AUTO, soc, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
114    "System on Chip information");
115#endif
116#if defined(SOC_VENDOR)
117static char hw_soc_vendor[] = SOC_VENDOR;
118SYSCTL_STRING(_hw_soc, OID_AUTO, vendor, CTLFLAG_RD, hw_soc_vendor, 0,
119	   "SoC vendor");
120#endif
121#if defined(SOC_MODEL)
122static char hw_soc_model[] = SOC_MODEL;
123SYSCTL_STRING(_hw_soc, OID_AUTO, model, CTLFLAG_RD, hw_soc_model, 0,
124	   "SoC model");
125#endif
126#if defined(SOC_REV)
127static char hw_soc_revision[] = SOC_REV;
128SYSCTL_STRING(_hw_soc, OID_AUTO, revision, CTLFLAG_RD, hw_soc_revision, 0,
129	   "SoC revision");
130#endif
131
132#if defined(DEVICE_VENDOR) || defined(DEVICE_MODEL) || defined(DEVICE_REV)
133static SYSCTL_NODE(_hw, OID_AUTO, device, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
134    "Board information");
135#endif
136#if defined(DEVICE_VENDOR)
137static char hw_device_vendor[] = DEVICE_VENDOR;
138SYSCTL_STRING(_hw_device, OID_AUTO, vendor, CTLFLAG_RD, hw_device_vendor, 0,
139	   "Board vendor");
140#endif
141#if defined(DEVICE_MODEL)
142static char hw_device_model[] = DEVICE_MODEL;
143SYSCTL_STRING(_hw_device, OID_AUTO, model, CTLFLAG_RD, hw_device_model, 0,
144	   "Board model");
145#endif
146#if defined(DEVICE_REV)
147static char hw_device_revision[] = DEVICE_REV;
148SYSCTL_STRING(_hw_device, OID_AUTO, revision, CTLFLAG_RD, hw_device_revision, 0,
149	   "Board revision");
150#endif
151
152void
153platform_start(__register_t a0 __unused, __register_t a1 __unused,
154    __register_t a2 __unused, __register_t a3 __unused)
155{
156	uint64_t platform_counter_freq;
157	int argc = 0, i;
158	char **argv = NULL;
159#ifndef	AR531X_ENV_UBOOT
160	char **envp = NULL;
161#endif
162	vm_offset_t kernend;
163
164	/*
165	 * clear the BSS and SBSS segments, this should be first call in
166	 * the function
167	 */
168	kernend = (vm_offset_t)&end;
169	memset(&edata, 0, kernend - (vm_offset_t)(&edata));
170
171	mips_postboot_fixup();
172
173	/* Initialize pcpu stuff */
174	mips_pcpu0_init();
175
176	/*
177	 * Until some more sensible abstractions for uboot/redboot
178	 * environment handling, we have to make this a compile-time
179	 * hack.  The existing code handles the uboot environment
180	 * very incorrectly so we should just ignore initialising
181	 * the relevant pointers.
182	 */
183#ifndef	AR531X_ENV_UBOOT
184	argc = a0;
185	argv = (char**)a1;
186	envp = (char**)a2;
187#endif
188	/*
189	 * Protect ourselves from garbage in registers
190	 */
191	if (MIPS_IS_VALID_PTR(envp)) {
192		for (i = 0; envp[i]; i += 2) {
193			if (strcmp(envp[i], "memsize") == 0)
194				realmem = btoc(strtoul(envp[i+1], NULL, 16));
195		}
196	}
197
198	ar5315_detect_sys_type();
199
200// RedBoot SDRAM Detect is missing
201//	ar531x_detect_mem_size();
202
203	/*
204	 * Just wild guess. RedBoot let us down and didn't reported
205	 * memory size
206	 */
207	if (realmem == 0)
208		realmem = btoc(16*1024*1024);
209
210	/*
211	 * Allow build-time override in case Redboot lies
212	 * or in other situations (eg where there's u-boot)
213	 * where there isn't (yet) a convienent method of
214	 * being told how much RAM is available.
215	 *
216	 * This happens on at least the Ubiquiti LS-SR71A
217	 * board, where redboot says there's 16mb of RAM
218	 * but in fact there's 32mb.
219	 */
220#if	defined(AR531X_REALMEM)
221		realmem = btoc(AR531X_REALMEM);
222#endif
223
224	/* phys_avail regions are in bytes */
225	phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
226	phys_avail[1] = ctob(realmem);
227
228	dump_avail[0] = phys_avail[0];
229	dump_avail[1] = phys_avail[1] - phys_avail[0];
230
231	physmem = realmem;
232
233	/*
234	 * ns8250 uart code uses DELAY so ticker should be inititalized
235	 * before cninit. And tick_init_params refers to hz, so * init_param1
236	 * should be called first.
237	 */
238	init_param1();
239	boothowto |= (RB_SERIAL | RB_MULTIPLE); /* Use multiple consoles */
240//	boothowto |= RB_VERBOSE;
241//	boothowto |= (RB_SINGLE);
242
243	/* Detect the system type - this is needed for subsequent chipset-specific calls */
244
245	ar531x_device_soc_init();
246	ar531x_detect_sys_frequency();
247
248	platform_counter_freq = ar531x_cpu_freq();
249	mips_timer_init_params(platform_counter_freq, 1);
250	cninit();
251	init_static_kenv(boot1_env, sizeof(boot1_env));
252
253	printf("CPU platform: %s\n", ar5315_get_system_type());
254	printf("CPU Frequency=%d MHz\n", ar531x_cpu_freq() / 1000000);
255	printf("CPU DDR Frequency=%d MHz\n", ar531x_ddr_freq() / 1000000);
256	printf("CPU AHB Frequency=%d MHz\n", ar531x_ahb_freq() / 1000000);
257
258	printf("platform frequency: %lld\n", platform_counter_freq);
259	printf("arguments: \n");
260	printf("  a0 = %08x\n", a0);
261	printf("  a1 = %08x\n", a1);
262	printf("  a2 = %08x\n", a2);
263	printf("  a3 = %08x\n", a3);
264
265	strcpy(cpu_model, ar5315_get_system_type());
266
267	/*
268	 * XXX this code is very redboot specific.
269	 */
270	printf("Cmd line:");
271	if (MIPS_IS_VALID_PTR(argv)) {
272		for (i = 0; i < argc; i++) {
273			printf(" %s", argv[i]);
274			boothowto |= boot_parse_arg(argv[i]);
275		}
276	}
277	else
278		printf ("argv is invalid");
279	printf("\n");
280
281	printf("Environment:\n");
282#if 0
283	if (MIPS_IS_VALID_PTR(envp)) {
284		if (envp[0] && strchr(envp[0], '=') ) {
285			char *env_val; //
286			for (i = 0; envp[i]; i++) {
287				env_val = strchr(envp[i], '=');
288				/* Not sure if we correct to change data, but env in RAM */
289				*(env_val++) = '\0';
290				printf("=  %s = %s\n", envp[i], env_val);
291				kern_setenv(envp[i], env_val);
292			}
293		} else {
294			for (i = 0; envp[i]; i+=2) {
295				printf("  %s = %s\n", envp[i], envp[i+1]);
296				kern_setenv(envp[i], envp[i+1]);
297			}
298		}
299	}
300	else
301		printf ("envp is invalid\n");
302#else
303	printf ("envp skiped\n");
304#endif
305
306	/* Redboot if_are MAC address is in the environment */
307	ar5315_redboot_get_macaddr();
308
309	init_param2(physmem);
310	mips_cpu_init();
311	pmap_bootstrap();
312	mips_proc0_init();
313	mutex_init();
314
315	ar531x_device_start();
316
317	kdb_init();
318#ifdef KDB
319	if (boothowto & RB_KDB)
320		kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
321#endif
322
323}
324